5
votes
2answers
254 views

What security concerns should one bear in mind when hacking open-invitation websites?

There's a couple other questions already addressing legalities, ethics, and liabilities of hacking websites with open invitations. What are legal/ethical concerns to bear in mind, when hacking ...
1
vote
3answers
7k views

PING BLOCKING: How to do? How to break?

I can access each page of a site through the browser (firefox). I can also see the ip and port address in firebug, but when I open cmd->ping site ->it says "request timeout". I also tried traceroute. ...
1
vote
1answer
4k views

What are the risks of removing ISATAP from the default global block list?

The process of installing Microsofts pseudo VPN called Direct Access requires me to remove the ISATAP name from the default global block list by running this command: dnscmd /config ...
3
votes
4answers
5k views

What is the threat of having the clipboard enabled on Citrix and other rdp?

It is a question I have had for some time which I have never received a solid answer on. It seems most infosec teams prefer to disable clipboard functionality on Citrix and other RDP setups. What is ...
0
votes
1answer
181 views

Best practice for selective opening of ports on network gateway

Our network is currently isolated from the outside by a Linux box, running iptables and Squid to control web access. By default we deny all outgoing traffic from all IP's, to force Web traffic ...
6
votes
3answers
904 views

Have hardware trojans been seen in the wild?

Military and intelligence organizations have spent a lot of resources guarding against the possibility of hardware trojans, unauthorized modifications to hardware circuits that leak information or ...
14
votes
2answers
1k views

What are legal/ethical concerns to bear in mind, when hacking websites with open invitations?

I was reading another question which mentions a site that had a page inviting people to try to hack it, and it made me wonder. Lets assume, for the sake of this rather hypothetical question, that a ...
6
votes
1answer
7k views

What is packet drop, packet loss and how Packet drop attack works?

I confused with the three terms: Packet drop. Packet loss. Packet drop attack.
0
votes
1answer
195 views

how to make a web based system that connects only the authorized user in the wi-fi access [closed]

this is for our thesis project. we proposed to study the Wi-Fi security in most related to the users.
0
votes
1answer
210 views

Securing communication

The problem: I have an open-source client (a Firefox add-on written in JavaScript) and a server containing somewhat sensible user information: username and user history (all from YouTube). The client ...
3
votes
3answers
3k views

Besides OpenVas and Nessus, what are my other options for vulnerability detection?

I know of Nessus (which is $1300 for a pro feed) and OpenVAS (which I don't like). I use Linux so do I have any other options for vulnerability detection?
51
votes
4answers
5k views

I think I accidentally DoS'd a website. What should I do?

I was browsing a website, and stumbled across a sample scheme for password-protecting web pages. The owner of the website specifically had a page that invited people to attempt to hack it. I wanted ...
6
votes
1answer
468 views

Ingress RFC1918 spoofing: How to handle it?

I've seen packets originating from RFC1918 addresses from two fairly large european ISP's (ASN1257 & smaller ASN35706) coming in on eBGP transit links lately, and I'm a bit puzzled why it wouldn't ...
15
votes
3answers
4k views

Password in file .php

My connection.php file stores the credentials to connect to the database. <?php $objConnect = mysql_connect("localhost","username","password"); mysql_select_db("selectDB", $objConnect); ...
7
votes
4answers
12k views

How do software keygens work?

I have seen them plenty of times, with many different types of software, but the one thing I have always wondered, is how software keygens know what key to generate. I know the basic principle of it: ...
5
votes
4answers
12k views

Security issues using iframes

We are looking to move to iframes due to technical challenges. By moving to iframes it will be easier to manage the technical issues. But we are not totally sure of security implications of iframes. ...
1
vote
3answers
679 views

Are Facebook, Yahoo, Google, etc. hackable?

What I would consider to be hacking one of these services is something along the lines of cracking databases (or I think what would be databases). In reality, I have no idea how sites like these store ...
4
votes
6answers
675 views

Is a self signed certificate sufficient to prove the integrity of my executable?

I have an EXE file on Windows that I have to distribute around. It's based on tclkit so an adversary could unpack it, change some tcl script inside and repack the exe. I would like to know if this ...
5
votes
6answers
4k views

How did the spam email sender get my name?

Some time ago I bought something online from a reputable website. I paid through my credit card and everything worked fine. The thing which is important to note is that the name used on the credit ...
9
votes
3answers
9k views

What is the DUKPT Key Derivation Function?

I'm tasked with decrypting ciphertext acquired from an encrypted card reader. The card reader utilizes DUKPT(derived unique key per transaction) scheme and 3DES encryption. I don't have a problem with ...
2
votes
4answers
306 views

“Out of the box” database security

When you install a RDBMS (say, PostgreSQL) and create a database, without taking any additional steps, what can you assume about the security/confidentiality of the data? I mean, is it encrypted by ...
2
votes
5answers
530 views

malware classification based on action [closed]

Where can I get info with a view to classify malware based on actions performed by the them. Eg. modifying registry files, copying themselves into other executable's etc.
7
votes
2answers
626 views

Established Security Design Patterns?

In software engineering, a design pattern is a general reusable solution to a commonly occurring problem within a given context in software design. Wikipedia lists many different design patterns for ...
2
votes
2answers
6k views

How secure is blocking all incoming connections on my ADSL or cable router?

My router, an up-to-date ADSL Fritz!Box 7340 router with a fixed leased IP address, has been configured to block all incoming traffic. Assuming, for the sake of argument, no extra security is ...
3
votes
3answers
1k views

How safe is RSA generated public-private key pair?

If one has been using the same set of public-private key pair for quite sometime now, given his public key(which is public), can't an attacker find the corresponding private key for that public key by ...
2
votes
3answers
671 views

How does Facebook avoid crawling over their site?

I used Netsparker community edition and tried to find a vulnerability in my personal site. Then I thought let's try with Facebook. It didn't show a single webpage also because normally it shows ...
3
votes
5answers
661 views

Is passwords with combination of different encodings super safe?

I was thinking about generating passwords with combination of English, Arabic, Chinese charac. Is this pass secure enough against brute force attacks?
2
votes
2answers
673 views

Writing files in a sub folder of the web folder (apache security)

I need to save session data for a dynamic web page script by writing to file. I have two questions: Are there any security preferences as to whether to save the data UNDER the web folder, or OUTSIDE ...
4
votes
6answers
11k views

monitoring outgoing network traffic

The graphs for one server that I am using are showing consistent 7.5 kb/s outgoing network traffic that started a few days ago. How can I monitor/log/capture/analize this traffic to see what is it, ...
4
votes
3answers
3k views

How secure can IP based login be?

From several security books and sites I understand that IP-based security (with which I mean: user is verified only by IP address) is a bad idea. Our idea is not new: we want a one-time validation and ...
0
votes
3answers
441 views

Where can we learn more about recursive encryption schemes?

I've been wondering about recursed encryption. The idea I'm trying to convey here is an encryption scheme where a message is encypted, then somehow encrypted again, and again, etc. The encryption ...
1
vote
1answer
240 views

Privilege usage checks

What does it mean that "the permission system does not include checks for transitive privilege usage" (quote from a paper on Privilege Escalation Attacks on Android). Android grants app privileges ...
4
votes
3answers
3k views

Nested Truecrypt containers

Which is more secure: use one container encrypted with AES > Twofish > Serpent = 768bits key size make an AES container, and inside it make another Twofish container then inside it make a third ...
4
votes
2answers
317 views

Drupal Disputed CVE Five Year Tempest – Open Source Security Shortfall?

Can someone add context to the subject issue? At first glance it appears to me this issue represents a fundamental shortfall in the forces encouraging secure coding in open source development. Is ...
3
votes
3answers
550 views

Encryption Question for patient PHI

I am the Compliance Officer for a laboratory. Is it permissible to send an unencrypted email with a patient accession number? It does not include patient name, DOB, SS# or address. It is just an ...
1
vote
3answers
238 views

Is a web application being built on an open-source platform less secure because it is open-source?

With the recent news that microsoft are releasing the source code for their ASP.NET Web API and web pages 1 I'm wondering, Does having access to the source code of the underlying libraries a web ...
2
votes
4answers
577 views

Demonstration of how security through obscurity fails to work

I need to demonstrate that security through obscurity fails twice in the following scenario. I've a secret KEY. User A gets MessageX = SecretTransformation(KEY, SecretValue1); User B gets MessageY ...
29
votes
4answers
6k views

How can PrivateSky not see your data?

PrivateSky is a website that promises encrypted "cloud-like" secure information exchange. They promise that except the sender and receiver, nobody can see your data. After testing it yesterday, I do ...
9
votes
5answers
10k views

How and why do people spam my website form?

In have a web form on my website, and someone keeps sending annoying spam through it. I know Captcha can block this, but why do people spam my site - what's their benefit? How do they access my web ...
2
votes
4answers
8k views

How commonly are SSL/TLS or S/MIME used by e-mail providers?

I was reading through different posts here about email security. After reading these I still have some questions. I understand that S/MIME can be used to transfer email securely between servers. ...
2
votes
1answer
576 views

Is XRY Forensic Tool able to extract data from iPhones?

As far as I know this only DOESN'T work with iPhone 4S and iPad2 / iPad 3, because of the fixed Boot Rom. So, is it no longer possible to brute-force the passcode lock? Can anybody confirm this with ...
0
votes
1answer
1k views

Router with good Firewall for office - total of 50 computers/devices including wifi devices [closed]

I am looking for a good Office Router that can handle good firewall rules, have logs, and ca support about 50 computers/devices connected with wire and wireless. We had different models before, and ...
9
votes
3answers
607 views

Reading keystrokes of other applications

Is it possible for other application running in the OS to read the keystrokes that my application uses? What about mouse events and window handles? Is there any security wall that the OS uses to ...
3
votes
2answers
176 views

Reading keystrokes of other applications

Is it possible for other application running in the OS to read the keystrokes that my application uses? What about mouse events and window handles? Is there any security wall that the OS uses to ...
4
votes
2answers
7k views

Finding environment variables with gdb, to exploit a buffer overflow

I have to exploit a very simple buffer overflow in a vulnerable C++ program for an assignment and I am not being able to find the environment variable SHELL. I have never worked with BoF before, and ...
11
votes
8answers
14k views

Is it possible to steal money directly from the systems of a big bank?

Sometimes I imagine: My money in the bank is just a floating point number in a mainframe's memory... So, if I just change 1 bit, I will win a lot of money... The most common way to steal money in ...
4
votes
2answers
1k views

Is DIGEST-MD5 secure if done over HTTPS?

If the DIGEST-MD5 negotiation is done over an HTTPS connection instead of HTTP, does that prevent this list of disadvantages from Wikipedia?: Digest access authentication is intended as a security ...
2
votes
2answers
692 views

How do I find .asmx files?

I have a web service (ASP.NET) running on my application server. It can be reached via http://xxxxxx/Servercomponents/servercomp.asmx Is possible to find this even if you don't know the file name ...
0
votes
1answer
2k views

What are the potential vulnerabilities in a SAML-based SSO approach?

What level of access would an attacker need to obtain to compromise a SAML-based SSO system? Would stealing the private key used to sign SAML requests be enough? What if an attacker had root on the ...
4
votes
3answers
1k views

Are Three attempts to block login a good idea?

In the company that I work there is a security rule: If you enter your password 3 times wrong, your login will be blocked! Then I have to go to mainframe program and re-register my new password. ...

15 30 50 per page